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From: echan@cadev6.intel.com (Eldon Chan ~ )
Newsgroups: comp.protocols.tcp-ip
Subject: Timeout mechanism to invalidate ARP cache entries
Keywords: ARP unix SunOS Ultrix
Message-ID: <2669@inews.intel.com>
Date: 23 Feb 91 03:38:31 GMT
Sender: news@inews.intel.com
Reply-To: echan@cadev6.intel.com (Eldon Chan ~ )
Organization: Intel Corporation
Lines: 19

On page 23 of RFC1122 (Requirements for Internet Hosts--Communication
Layers) under the DISCUSSION paragraph said this:

   " The ARP specification [LINK:2} suggests but "DOES NOT" require a
timeout mechanism to invalidate cache entries when hosts change their
Ethernet addresses "

Would someone tell me what are implemented and how it is done on SunOS,
Ultrix and other UNIX machines ?

The RFC mentioned four mechanisms-- timeout, unicast poll, link-layer
advise and high-layer advice. So, which OS is using which mechanisms ?

Thanks in advance for your input.

Eldon Chan
Design Technology
Intel Corporation
echan@scdt.intel.com


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